Territory



3 Sheets-Sheet 1.

(No Model.)

C. J. FENDEL. ORB MASTER.

No. 101,023l Patented Apr. 9, 1889.

Il Il /NVE/VTOH: ydfbg By Jau/vm ATTORNEYS N, Prrsns. Phnwumngmphu.wminpm.. n, c.

(No Model.) A 3 sheets-sheet 2..

C. J. FENDEL.

ORE MASTER. No.l 401,023. Patented Apr.'9, 1889.,

(No Model.) 3 Sheets-Sleet 3.'.

C. J. FENDEL. AORE MASTER. No. 401,023. Patented Apr. 9, 1889..

i Q "k f i s n? N E f s :ff B

E@ L m f g; N

WIT/VESSES: /NVEOH mg w 1wv ATTHNEYS.

llNrTED STATES PATENT OEEICE.

CHARLES J. FENDEL, OF ANACONDA, MONTANA TERRITORY.

ORE-ROASTER.

SPECIFICATION forming part of Letters Patent No. 401,023, dated April 9,1889.

Application filed October l1, 1888. Serial llo. 287,790. (No model.)

To aZZ whom, il? may concern.-

Be it known that I, CHARLES J. FENDEL, of Anaconda, in the county ofDeer Lodge and Territory of lllontana, have invented a new and ImprovedOre-Roaster, of which the following is a full, clear, and exactdescription.

The 'obj ect of the invention is to provide a new and improvedore-roaster which is simple and durable in construction and veryeffective in operation, roasting or calcining the most refractory oreswith little fuel and a great saving of labor.

The invention consists of certain parts and details and combinations ofthe same, as will be fully described hereinafter, and then pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a side elevation of .the improvement with the furnace insection. Fig. 2 is an enlarged sectional end elevation of the same onthe line 5c x of Fig. l. Fig. 3 is a longitudinal section of the same onthe linefy y of Fig. 2,parts being broken out. Fig. 4 is a sectionalplan View of the bed of the improvement on the line a' z of Fig. 1 andFig. 5 is a side elevation of a coil of pipe used in connection with theimprovement.

The improved ore-roaster consists, principally, of the furnace A and thedrum B, mountedto rotate and heated bythe furnace A. The drum B isprovided with an outer cylinder, C, which incloses an inner conicalcylinder, D, extending at its small end into the furnace A and at itslarge end reaching to within a short distance of the outer end of theouter cylinder, C. The yinner surface of the outer cylinder, C, is linedwith firebrick E, having Veshaped tops, as is plainly illustrated inFig. 2, so that the ore passing through the said cylinder is broken upand prevented from forming balls. The inner surface of the conicalcylinder D is provided with V-shaped ridges D', formed directly in themetal of which the cylinder D is made.

In the interior of the outer cylinder, C, is formed a spiral, F,extending throughout 5o the length of the cylinder, and in the interiorof the inner cylinder, D, is formed a spiral, G, also extending from oneend of the cylinder to the other, but running in an opposite directionto the spiral F. The pitch of the spiral G is about twice as great asthe pitch of the spiral F, to compensate for the larger diameter of thesaid spiral F.

The inner small end of the conical cylinder D opens into the ilue Hofthe furnace A, and

-into this small end discharges a spout, I,

passing through the wall of the furnace A, and serving to introduce thegreen ore into the roaster-that is, into the small end of the conicalcylinder D. Now when the drum B is rotated the spiral G causes the oreto travel outward to the end of the cylinder D and then fall into thecylinder C, which,by its spiral F, causes the ore to travel'inward, tobe finally discharged at the inner end of the cylinder C into a slot,A', formed in the inner wall, A2, of the furnace A. The slot A' leads tothe outside of the furnace.

On the outside of the outercylinder, C, are formed a number of flangedrings, J, resting on friction-pulleys K, secured on the shafts K',mounted to turn in suitable bearings formed in the bed B', extendingoutward from the furnace A in line with the drum B. On the outer end ofeach shaft K' is secured a gearwheel, K2, which meshes into thegear-wheel K3, secured to the main driving-shaft K4, carrying agear-wheel or pulley, K5, receiving a rotary motion from suitable means.Thus when the pulley or gear-wheel K5 is rotated it rotates the shaft K4and imparts a like rotary motion to the shafts K', which, by theirfriction-pulleys K, rotate the drum B.

On the outside of the conical cylinder D is formed a spiral, L, runningin line with the spiral F, as is plainly shown in Fig. 3. The

spiral F is formed of alternate hollow andv solid sections F' and F2,and the spiral L is formed of similar alternate hollow and solidsections L' and L2; but a hollow section, F', of the spiral F isradially in line with a solid section, L2, of the spiral L, and thesolid section F2 of the spiral F is radially in line with the hollowsection L' of the spiral L. (See Fig. 2.)

The spirals L and F are connected with IOO each other by hollow radialspokes N, arranged in such Ya manner that the end of one spoke opensinto one end of a hollow section, F', of the spiral F, and the other endof the said spoke opens into one end of the corresponding hollowsection, L', of the spiral L, so that the several succeeding hollowsections F' and L' in the spirals F and L are in communication with eachother, as plainly shown in Fig. 2. The last spoke N, between thecylinders C and D, is connected with a pipe, O, conneeted with asuitable source of water-supply, and the innermost hollow section, F',of the spiral F is connected with a pipe, P, extending centrally throughthe cylinder D and out through the wall of the furnace A. Now when wateris passed through the pipe O it passes through the spokes N and from onehollow section F' of the spiral F to the next following section L' ofthe spiral L, and then into the next following hollow section F' of thespiral F, and so on, from one hollow section in one spiral to the otherhollow section in the other spiral until the water iinally passesintothe pipe P and out of the same. The water thus passing through thespirals F and L serves to cool spokes N, so as to keep them cool andfrom burning, and thus be able to sustain the weight of inner conicalcylinder, D. Air might be forced through and serve the same purpose, butwater will be best.

In order to elevate the ore to a certain height in the cylinder C', Iprovide the latter with the angular longitudinal strips Q, secured tothe spokes N and extending at their outer ends to within a shortdistance of the spiral F. In a similar manner radial strips R aresecured in the cylinder D, also serving to elevate the ore to a certainheight and then dropping the same, whereby th e ore is thro ugh outagitated.

The furnace A is preferably made with two inclined grates, S and S',both leading into the common fire-chamber T, opening into the inner openend of the cylinder C. The latter projects at this inner end into acorresponding recess in the furnace A, and an annular flange, C', formedon the said cylinder, rests against the outersurface of the furnace A,so as to make the latter and the cylinder C airtight.

The grates S and S' are charged from the sides of the furnace A throughsuitable doors, U and U', as shown in Fig. 2.

The operation is as follows: A rotary motion is imparted to the drum B,as above described, whereby both cylinders C and D are rotated. At thesame time the furnace A is fired, so that the heat developed on thegrates S and S passes through the lire-box T into the inner open end ofthe cylinder C, then passes along the said cylinder to its outer closedend, and then passes into the open large end of the conical cylinderD.The heat conical cylinder D and is moved outward by` the spiral G untilthe ore drops out of the large end of the cylinderD into the outer endof the cylinder C, in which the ore is moved toward the furnace again bythe spiral F. The roasted or calcined ore is finally discharged at theinner end of the cylinder C into the slot A', which delivers the ore tothe outside of the furnace. The ore, while passing through the cylinderD, is constantly broken up by the riffled interior surface, D', of thesaid cylinder and also by the agitatingstrips R. In a similar manner theore is constantly broken up in the outer cylinder, C, by the pointedends of the fire-brick E and by the strips Q, which elevate the ore to acertain height and then drop the same, as before described.

The inner ends of the strips Q may be formed of coils of pipe V, (shownin Fig. 5,) the end of each coil of pipe being connected with the spokesN, so that water passing through the said spokes may also pass throughthe said coil of pipe V. Thus the intense heat from the furnace A willnot burn the strips Q at the inner end of the said cylinder C, at whichthe most intense heat is developed.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. rlhe combination, in an ore-roaster, with the outer cylinder and theinner cylinder extending therethrough, of the tubes connecting saidcylinders, and series of imperforate passages on both cylinders, thetubes alternately connecting the forward end of a passage on onecylinder with the rear end of a passage on the other cylinder and theforward end of the latter passage with the rear end of the next passageon the iirstnamed cylinder, whereby a continuous serpentine passage isformed, substantially as set forth.

2. In an ore-roaster, the combination, with an inner and an outercylinder, of a spiral. formed on the inner surface of the said outercylinder and made of alternate hollow and solid sections, a secondspiral formed on the outer surface of the inner cylinder and also madeof hollow and solid sections, and hollow spokes connecting the hollowsections of one spiral with the hollow' sections of the other spiral,substantially as shown and described.

3. In an ore-roaster, the combination, with an inner and an outercylinder, of a spiral formed on the inner surface of the said outercylinder and made of alterna-te hollow and IOO solid sections, a secondspiral formed on Jhe outer surface of the inner Cylinder and also madeof hollow and solid sections, hollow spokes connecting the hollowsections of one spiral wit-h the hollow sections of Jhe other spiral, awater-supply pipe leading to 011e of the outermost spokes, and adischarge-pipe leading from the last hollow section of one .of Johespirals to the outside of the roaster,

substantially as shown and described.

CHARLES J. FENDEL.` Witnesses:

WILLIAM SowERBY, PATRICK HENNEssY.

